Synthesis of ZnO/ZIF-8 hybrid photocatalysts derived from ZIF-8 with enhanced photocatalytic activity,Inorganic Chemistry Frontiers

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Synthesis of ZnO/ZIF-8 hybrid photocatalysts derived from ZIF-8 with enhanced photocatalytic activity
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-01-16 00:00:00 , DOI: 10.1039/c7qi00752c
Xiaobing Yang _{1,

2,

3,

4,

5} , Zhaodong Wen _{4,

6,

7,

8,

9} , Ziling Wu _{4,

9,

10,

11} , Xuetao Luo _{4,

6,

7,

8,

9}

Affiliation

Controllable conjunction of semiconductors with metal organic frameworks (MOFs) has been an efficient tool to enhance the chemical and physical properties of semiconductors by forming semiconductor–MOF hybrid structures. Herein, a novel MOFs-derived strategy to fabricate ZnO/ZIF-8 hybrid photocatalysts via the micro-catalysis technique by using ZIF-8 as a precursor and AgNO₃ as a catalyst is reported. The properties and structures of ZnO/ZIF-8 hybrid photocatalysts can be effectively controlled by adjusting the concentration of AgNO₃ solution. The as-prepared ZnO/ZIF-8 hybrid photocatalysts were characterized by XRD, SEM, TEM, UV-vis, BET and other techniques. Their photocatalytic performances were evaluated by degradation of rhodamine B (RhB) solution under UV light. The results indicate that ZnO/ZIF-8 photocatalysts exhibit excellent photocatalytic properties. ZnO/ZIF-8(50) exhibits the highest photocatalytic activity and can degrade 98.17% RhB after 12 min of UV light irradiation, which is higher than the degradation ability of P25 (95.05%), benefiting from the synergistic effect of ZnO and ZIF-8. Furthermore, the ZnO/ZIF-8 (50) photocatalyst shows high photostability. After four repeated cycles, its photocatalytic efficiency could be maintained at 95.54%.

中文翻译：

ZIF-8衍生的具有增强光催化活性的ZnO / ZIF-8杂化光催化剂的合成

半导体与金属有机骨架（MOF）的可控结合已成为通过形成半导体-MOF混合结构来增强半导体的化学和物理特性的有效工具。本文中，报道了一种新颖的基于MOFs的策略，其以ZIF-8为前驱体并以AgNO ₃为催化剂，通过微催化技术制备了ZnO / ZIF-8杂化光催化剂。通过调节AgNO ₃的浓度可以有效地控制ZnO / ZIF-8杂化光催化剂的性质和结构。解决方案。通过XRD，SEM，TEM，UV-vis，BET等技术对制备的ZnO / ZIF-8杂化光催化剂进行了表征。通过罗丹明B（RhB）溶液在紫外光下的降解来评估其光催化性能。结果表明，ZnO / ZIF-8光催化剂表现出优异的光催化性能。ZnO / ZIF-8（50）表现出最高的光催化活性，在紫外线照射12分钟后可降解98.17％的RhB，高于P25的降解能力（95.05％），这得益于ZnO和ZIF的协同作用。 -8。此外，ZnO / ZIF-8（50）光催化剂显示出高的光稳定性。经过四个重复循环，其光催化效率可以保持在95.54％。

更新日期：2018-01-16

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